Food preservative and preparation method thereof

Abstract

The invention relates to a food preservative and a preparation method thereof. The food preservative comprises chlorine dioxide aqueous solution with the concentration of 50mg / L-500mg / L, pH regulator dissolving in the aqueous solution and metallic chlorite, wherein, the pH regulator can control the aqueous solution to keep acidity; and the contents of the pH regulator and the metallic chlorite are enough to ensure that the amount of chlorine dioxide generated by reaction of hydrogen ions slowly released by the metallic chlorite and the pH regulator approximates to the amount of chlorine dioxide volatilized gradually in the aqueous solution in more than one year. The food preservative has simple components, can be directly applied in no need of adding activating agent, mainly takes molecular chlorine dioxide as an effective component, and has excellent disinfection performance and the like, stable and permanent performance, and is safe and non-toxic; and meanwhile, the food preservative has simple preparation process and low cost, can be used as a broad-spectrum and long-acting product capable of safely disinfecting, refreshing and deodorizing, and can be widely used in various fields.

Description

technical field [0001] The invention relates to a food fresh-keeping agent and a preparation method thereof, in particular to a ready-to-use long-acting chlorine dioxide food fresh-keeping agent and a preparation process thereof. Background technique [0002] With the continuous improvement of living standards and the increasing awareness of health and hygiene, people have higher and higher requirements for disinfection products. Among many disinfection products, chlorine dioxide (ClO 2 ) as the main fourth-generation disinfectant, because of its high-efficiency broad-spectrum bactericidal ability, non-toxic and harmless, no residue, and no environmental pollution, it is widely used in medical and health care, food processing, fresh-keeping, drinking water disinfection, cooling water treatment, It has been widely used in fields such as daily detergents. Chicken treated with stable chlorine dioxide can effectively prolong the storage period at a temperature of 5°C. In the ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main categories of chlorine dioxide products produced in the market: one is to use chlorine dioxide generators to produce chlorine dioxide aqueous solutions. The chlorine dioxide in the aqueous solution is active and will decompose under the action of room temperature and sunlight. Extremely unstable, its concentration cannot be maintained, it must be prepared and used at the place of use, and the initial investment cost is high, which limits many application fields

There is also a kind of stable chlorine dioxide that people usually use, and its production principle is to mix ClO 2 The gas is absorbed by the absorption liquid to generate chlorite ion state (ClO 2 - ), there is no molecular state of ClO in the mixed solution 2 , but only the precursor substance containing chlorine dioxide, it must be activated by adding an acidic activator before releasing the real ClO 2 , Moreover, the stability of the activated chlorine dioxide is also very poor, and the concentration can only be maintained for a short time. It needs to be prepared and used immediately, and the action time cannot be sustained. The scope of use of chlorine

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